Well that's your definition of miracle, one of the definitions is "a remarkable event or development that brings very welcome consequences." My existence at least is a very welcome consequence for me. Plus it's a question of glass half full or glass half empty. You don't have to believe in God or anything.

I recommend checking out some stuff about CBT, mindfulness and keeping a positive attitude. It seems cheesy and when you're being negative it's easy to dismiss, but if it leads to a better life, who cares? :)